Bear TRX 32 changing draw weight help

[Pete112288]

I have a Bear TRX 32 that when I first got it, it still had the factory sticker on it that said 50-70 # draw weight.
I have several different cam modules for it. I have taken it to Bob's in Longview and we have changed modules and adjusted everything but the max draw weight we could get out of it is around 60-62#. I wanted to get it up closer to the 70 # mark. I dont have the modules with me (in storage) to saw which ones I have, I know I have 3 or 4 different ones. Am I missing something? Is there more modules?
Thank ya